Railway-frog



(No Model.)

A. L. STANFORD. RAILWAY FROG.

No. 522,240. PatentedJuly 3, 1894.

lillllil UNITED STATES- PATENT DFFICE.

ARTHUR L. STANFORD, OF EVANSTON, ILLINOIS.

RAILWAY-FROG.

SPECIFICATION forming part of Letters Patent No. 522,240, dated July 3,1894. Application filed January 11, 1894. SerialNo 496,560. (No model-To all whom it may concern.-

Be it known that I, ARTHUR L. STANFORD, a citizen of the United States,and a resident of the city of Evanston, county of Cook, and State ofIllinois, have invented certain new and useful Improvements inRailway-Frogs, of which the following is a specification.

My invention relates to improvements in the class of railway frogshaving the wing and point rails fastened together by means of clampswhich extend across the bases of the frogs transversely.

The object of my invention is to provide improved means for holding theparts of the frog together, for permitting them to be convenientlytightened, and aswell to provide against the tendency of the parts towork loose when the frog is subjected to use.

In the drawings which I submit herewith, Figure 1 is ahorizontal sectiontaken just below the heads of the rails of a railway frog having myimprovements. Fig. 2 is a section taken on the line 3 of Fig. I viewedin the direction of the arrow and enlarged. Fig. 3

is an end view of the enlarged end of the clamp D or D showing alsoscrew threaded bolt E or E.

F is the frog comprising the wing rails B, point rails A, filling G orits equivalent, and the improvements as above stated whichit is theobject of my invention to provide.

D and D are clamps each formed of suitable material and having their endportions turned toward each other to form the hooks X and X. Said hooksX and X are sufficiently enlarged, perforated longitudinally, screwthreaded and otherwise adapted to receive the screw threaded bolts. Eand E. Hooks X are adapted to press against the web of the wing railsand are preferably provided with projections d which enter suitableopenings in the web of the wing rails to prevent the natural tendency ofthe clamps to become loose by slipping toward that point where the wingrails converge. The clamp D is placed near those divergent ends of thewing rails which embrace the point rails, and the clamp D is placed nearthe convergent ends of the point rails. The hooked ends X of the clampsD and D are somewhat shorter than the hooked ends X to extend short ofand leave space between their extremities and the adjacent sides of theweb of the rails to admit beveled spring washers G and G.

Tightening bolts E and E are screw threaded a portion of their lengthand made square a portion of their length near their outer ends to takea wrench, and are provided with extensions e and e at their other endswhich pass through the beveled spring washers G and G and penetrate theweb of the wing rails: This prevents the clamps from slip-- ping at thisend. It is sufficient to provide the bolts E and E at one end only ofeach clamp, though if required they may be provided at both ends,inwhich case of course the hooks X will be made to correspond with thehooks X. The washers G and G are upon the projections e and e of thebolts E and E. These washers are beveled to account for the angle of thewing rails, andare concavo convex that they may yield somewhat under thepressure of the bolts E and E. This yielding of the washers relieves thejar upon the bolts when the frog is in use and operates as an effectuallock to prevent said bolts from working loose.

As appears from the drawings, and the foregoing description, if in theuse of the frog the parts become loosened they may be readily tightenedby means of the clamps and tightening bolts.

What I claim as new, and desire to secure by Letters Patent, is- Y 1. Ina railway frog thecombination of the wing rails 13 and point rails A,braced intermediately by filling G or its equivalent, of clamps D and Deach comprising a bar having its ends turned toward each other affordingthe hook shaped extremities X and X, the said clamps embracing the frogacross its base so as to confine the wing and point rails thereof; andtightening bolts or set screws E and E contained within one or both ofsaid hookshaped extremities X and X and adapted to bear against theouter sides of the wing rails substantially as set forth.

2. In a railway frog the combination of the wing rails 13 and pointrails A braced intermediately by filling O or its equivalent, of clampsD and D each comprising a bar having its ends turned toward each otheralfordingthe hook shaped extremities X and X;

the said clamps embracing the frog across itsbase so as to confine thewing and the point rails thereof; and tightening bolts E and E fortightening said clamps; said tightening bolts having the projections eand e to prevent same from slipping from place, snbstantially asdescribed.

3. In a railway frog the combination of the wing rails B and the pointrails A braced intermediately by filling O or the like; of clamps D andD each comprising a bar having its ends turned toward each otheraffording the hook shaped extremities X and X, the said clamps embracingthe frog across its base so as to confine the Wing and the point railsthereof; said hook shaped extremity X being provided with the projectiond to penetrate the web of the wing rail to prevent the clamp fromslipping from place; and tightening bolts E and E for tightening saidclamps substantially as described.

ARTHUR L. STANFORD. Witnesses:

JOHN S. DONNELLY, GEO. E. STANFORD.

